Climate almanac
Osan
Gyeonggi-do, South Korea · 37.15°, 127.07°
What is the weather like in Osan in December?
In December, Osan is typically 40°F (4°C) during the day and 24°F (-4°C) at night. The month brings about 1.2 in (30 mm) of precipitation in total. Snowfall averages about 1.6 in (41 mm) over the month.
- Average high40°F (4°C)
- Average low24°F (-4°C)
- Precipitation1.2 in (30 mm)
- Clear or mostly clear days14
- Snowfall1.6 in (41 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)